|-原 composer update又出了问题，由于项目文件3年没用过composer安装扩展了，各种问题
- egulias/email-validator 2.1.x-dev requires doctrine/lexer ^1.0.1 -> no matching package found.
- yiisoft/yii2-swiftmailer 2.1.x-dev requires swiftmailer/swiftmailer ~6.0 -> satisfiable by swiftmailer/swiftmailer[v6.
2.3].
- swiftmailer/swiftmailer v6.2.3 requires egulias/email-validator ~2.0 -> satisfiable by egulias/email-validator[2.1.x-d
ev].
- Installation request for yiisoft/yii2-swiftmailer ~2.0.0 || ~2.1.0 -> satisfiable by yiisoft/yii2-swiftmailer[2.1.x-de
v].
[root@izj6c76p38xsj1pdgufa46z wokan]# composer update
Do not run Composer as root/super user! See https://getcomposer.org/root for details
Loading composer repositories with package information
Updating dependencies (including require-dev)
[Composer\DependencyResolver\SolverProblemsException]
Problem 1
- egulias/email-validator 2.1.x-dev requires doctrine/lexer ^1.0.1 -> no matching package found.
- yiisoft/yii2-swiftmailer 2.1.x-dev requires swiftmailer/swiftmailer ~6.0 -> satisfiable by swiftmailer/swiftmailer[v6.
2.3]. ...
